ArticleNutrition & diabetes2026
Reversal of canonical Wnt/β-catenin signaling pathway attenuates gestational diabetes mellitus-induced offspring cardiac hypertrophy: mechanistic insights into pathological remodeling.
Article in Nutrition & diabetes, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundGestational diabetes mellitus (GDM), a prevalent prenatal metabolic disorder characterized by hyperglycemia occurring in approximately 9.2% of pregnancies globally, imposes significant cardiovascular risks on offspring, including developmental cardiac hypertrophy and long-term functional impairment. Despite its clinical importance, the molecular mechanisms governing GDM-induced cardiac malformations remain elusive.
aimsThis study aimed to delineate the regulatory role of the Wnt/β-catenin/Tcf7l2 signaling pathway in mediating pathological cardiac remodeling in GDM-exposed offspring through experimental manipulation using a clinically relevant murine model.
methodsWe established a clinically relevant GDM mouse model exhibiting key metabolic features including hyperinsulinemia and impaired glucose tolerance, which faithfully recapitulates human GDM pathology. Cardiomyocyte-specific β-catenin knockout and cardiomyocyte-specific overexpression of constitutively active β-catenin were employed for genetic manipulation. Pharmacological intervention was performed using saxagliptin, a clinically approved DPP-4 inhibitor. Cardiac phenotypes were evaluated by histopathological analysis, echocardiography, and molecular assessments of Wnt/β-catenin pathway activity and hypertrophic markers.
resultsHistopathological and echocardiographic analyses revealed pronounced cardiac hypertrophy in GDM-exposed offspring, concomitant with activation of the Wnt/β-catenin/Tcf7l2 pathway in myocardial tissues. Functional studies demonstrated that cardiomyocyte-specific β-catenin ablation attenuated GDM-induced hypertrophic remodeling, whereas constitutive β-catenin overexpression exacerbated cardiac dysfunction. Importantly, pharmacological intervention with saxagliptin significantly ameliorated cardiac hypertrophy in GDM-offspring. This therapeutic effect was paralleled by marked suppression of Wnt/β-catenin signaling activity and reduced expression of ANP.
conclusionCollectively, these findings provide compelling evidence that dysregulation of the Wnt/β-catenin/Tcf7l2 pathway constitutes a critical mediator in GDM-induced cardiac hypertrophy, and highlight saxagliptin as a potential therapeutic strategy to mitigate adverse cardiac outcomes in GDM offspring.
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